Sika Sikasil GP HT Red 10oz 432059

Sikasil GP Hi Temp Red is a general purpose, one-component, non-sag, elastomeric, RTV acetoxy silicone sealant with good adhesion characteristics for general sealing and bonding applications. Sikasil GP Hi Temp Red maintains elastomeric properties up to 500° F continuous, 550°F intermittent.

Fast cure - move assembled or sealed parts quickly
High temperature, UV, and ozone resistance
Excellent adhesion, bonds to many substrates without priming

$12.33

Availability: In stock ( 14 Available )

SKU

17876

Sika Sikasil GP HT Red – 10oz High Temperature Silicone Sealant

Sika Sikasil GP Hi Temp Red is a high-performance, one-component, non-sag, RTV silicone sealant engineered for extreme temperature environments. Packaged in a 10oz cartridge, this acetoxy-cure elastomeric sealant provides excellent adhesion and durability for a wide range of general sealing and bonding applications. It maintains flexibility and performance in continuous service temperatures up to 500°F and resists intermittent spikes up to 550°F. Sikasil GP HT Red is resistant to UV, ozone, and moisture, and includes an anti-microbial additive for added mold resistance. Ideal for industrial, HVAC, plumbing, appliance, and automotive sealing tasks requiring heat resistance and longevity.

Key Features:

One-component, moisture-cure RTV silicone
High temperature resistance: 500°F continuous, 550°F intermittent
Excellent adhesion to most substrates without primer
Fast skin time and superior tooling
Anti-microbial additive for mold resistance
UV, ozone, and weather resistant
Non-sag formula for overhead and vertical use
Red color for high-visibility or industrial identification

Applications:

Sealing ovens, heaters, ducts, and exhaust systems
Glazing and sealing around windows and skylights
HVAC, appliance, and roofing installations
Automotive and marine applications
Sealing joints in trailers, RVs, and machinery
Bonding to glass, tile, fiberglass, wood, and painted metals

Technical Specifications:

Property	Value
Packaging	10 fl.oz. (295 ml) cartridge
Cure Type	Acetoxy, moisture-cure
Skin Time	13 minutes (73°F, 50% RH)
Shore A Hardness	20 (ASTM D2240)
Tensile Strength	200 psi (ASTM D412)
Elongation at Break	500% (ASTM D412)
Peel Strength	20 pli (ASTM C794)
Service Temperature	-60°F to 500°F continuous, 550°F intermittent
Shelf Life	24 months (unopened, below 77°F)

Frequently Asked Questions:

Can Sikasil GP HT Red be used on metal ducts or appliances?
Yes. It adheres well to painted and unpainted metals and is ideal for high-heat environments like appliances and ductwork.

Is this product mold-resistant?
Yes. It includes an anti-microbial additive to help resist mold and mildew in high-humidity applications.

Can Sikasil GP HT Red be painted?
No. This product is not paintable. Use it where paint coverage is not required or use a sealant compatible with paint.

More Information